I'm in the middle of doing the timing belt, VCG, and seals on my A6 2.8. Everything was going great until a few minutes ago.

I'm following Blauparts instructions, my Bentley printouts, plus other DIY that I printed from here and other forums.

I was able to get the timing belt and components off with no problems. Everything to TDC as stated and crank locking tool installed without a hitch. I then began to tackle the VCG since the sprockets and valve cover backing plates were already off. I started with the passenger side and removed the valve cover. I marked the chains 16 rollers with a paint pen and installed the tensioner to tool to give it slack. I realized I hadn't removed the position sensor at this point and took it off. When trying to remove the sensor's backing plate, while turning, the cam and chain jumped. In a panic, I tried to reverse the direction thinking "one backward, one forward" and I'll be where I started, which I now know is obviously wrong.

What do I do to correct the timing on this side? I'm now worried that I may have bent valves. Any suggestions on how to proceed? I'm still trying to replace the tensioner seals, cam plugs, and half-moon seals if possible. The driver's side is still perfect and I'm assuming the crankshaft is too.

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Did the chain move in tandem with the cams or did the chain move and everything else stayed in place?

I asked because without the sprocket on the front, you would have to apply a decent amount of force to move both cams in tandem and I'm not even sure how you would do that without trying. You said you depressed the tensioner and THEN it moved? This is why I think you possibly saw the chain move without the cams moving thinking everything moved in tandem.

Also, I'm pretty certain you can set aside any fears of your other side being messed up... yet. Without the timing belt on nothing will move in tandem.

BTW good luck with your valve cover gaskets. Make sure you use RTV in the angled sections of the tongue and groove section of the cylinder head for a leak free application. I just did mine and learned the hard way about not applying RTV. Let me know if you need any pointers / tips on the job, I pretty much did all of this three times now.

 

You said you marked the chain to the cam gears, right? Just realign to the marks and you are all good. Both banks get aligned with the cam lock bar. You should be good.

 

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